Microstructures of brazed and solid-state diffusion bonded joints of tungsten with oxide dispersion strengthened steel

Naoko Oono, Sanghoon Noh, Noriyuki Iwata, Takuya Nagasaka, Ryuta Kasada, Akihiko Kimura

Research output: Contribution to journalArticlepeer-review

37 Citations (Scopus)

Abstract

The brazed and solid-state diffusion bonded (SSDB) joints of tungsten with oxide dispersion strengthened (ODS) steel were fabricated to use ODS steels as a structure component of first wall with tungsten as a plasma facing material in fusion blankets. Particular attention was paid to changes in the microstructure and chemical compositions in the bonding region. W was found to diffuse significantly into ODS steel, whereas there was only a limited diffusion of Fe and Cr from the ODS steel into W; these results are consistent with the diffusivity of each element. Interdiffusion multi-layer containing a layer with high concentration of B and of C was produced in the brazed joint and the SSDB joint, respectively.

Original languageEnglish
Pages (from-to)253-256
Number of pages4
JournalJournal of Nuclear Materials
Volume417
Issue number1-3
DOIs
Publication statusPublished - 2011 Oct 1
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Materials Science(all)
  • Nuclear Energy and Engineering

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